Physics – Fluid Dynamics
Scientific paper
2007-03-28
Rev. Sci. Instrum. 78, 065105 (2007)
Physics
Fluid Dynamics
14 pages
Scientific paper
10.1063/1.2745717
We have developed novel instrumentation for making Lagrangian measurements of temperature in diverse fluid flows. A small neutrally buoyant capsule is equipped with on-board electronics which measure temperature and transmit the data via a wireless radio frequency link to a desktop computer. The device has 80 dB dynamic range, resolving milli-Kelvin changes in temperature with up to 100 ms sampling time. The capabilities of these "smart particles" are demonstrated in turbulent thermal convection in water. We measure temperature variations as the particle is advected by the convective motion, and analyse its statistics. Additional use of cameras allow us to track the particle position and to report here the first direct measurement of Lagrangian heat flux transfer in Rayleigh-B{\'e}nard convection. The device shows promise for opening new research in a broad variety of fluid systems.
Gasteuil Yoann
Gibert Mathieu
Metz Pascal
Pinton Jean-François
Shew Woodrow L.
No associations
LandOfFree
An instrumented tracer for Lagrangian measurements in Rayleigh-Bénard convection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An instrumented tracer for Lagrangian measurements in Rayleigh-Bénard convection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An instrumented tracer for Lagrangian measurements in Rayleigh-Bénard convection will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-272955